US9956735B2 - Semi-finished honeycomb part and sandwich part - Google Patents

Semi-finished honeycomb part and sandwich part Download PDF

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Publication number
US9956735B2
US9956735B2 US14/978,876 US201514978876A US9956735B2 US 9956735 B2 US9956735 B2 US 9956735B2 US 201514978876 A US201514978876 A US 201514978876A US 9956735 B2 US9956735 B2 US 9956735B2
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Prior art keywords
honeycomb core
honeycomb
core
webs
semi
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US20160176140A1 (en
Inventor
Guenter WOLFSBERGER
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Magna Steyr Fahrzeugtechnik GmbH and Co KG
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Steyr Daimler Puch Fahrzeugtechnik AG and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0089—Producing honeycomb structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0048—Local deformation of formed objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D24/00—Producing articles with hollow walls
    • B29D24/002—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled
    • B29D24/005—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled the structure having joined ribs, e.g. honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/146—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers whereby one or more of the layers is a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2103/00—Use of resin-bonded materials as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0872—Prepregs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0024—Crushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0056—Moistening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/07—Parts immersed or impregnated in a matrix
    • B32B2305/076—Prepregs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/04—Treatment by energy or chemical effects using liquids, gas or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/04—Treatment by energy or chemical effects using liquids, gas or steam
    • B32B2310/0409—Treatment by energy or chemical effects using liquids, gas or steam using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • Embodiments relates to a method for producing a semi-finished honeycomb-core product for producing a sandwich component, a method for producing a sandwich component, a semi-finished honeycomb-core product, a sandwich component, and the use thereof as a component of a motor vehicle.
  • sandwich components having honeycomb cores in automotive construction, for example as the bonnet of a motor vehicle.
  • These sandwich components may be used as outer skin parts in visible regions of a vehicle and in the process form what are referred to as Class A surfaces which may be identified by an observer.
  • Outer skin parts having for example paper as the sandwich core material usually exhibit, following sandwich pressing for shaping the component, core impressions or component corrugations on the surface, i.e. on an outer layer, which reproduce the contours of the webs of the paper core. This is also known as the “telegraphing effect”. This has a striking effect on the quality of the surface and can subsequently be concealed only with a great deal of effort by way of coating layers or other complicated treatment processes.
  • Embodiments relate to a method for producing a semi-finished honeycomb-core product for producing a sandwich component, and a method for producing a sandwich component, which at least reduces core impressions on an outer layer of the sandwich component.
  • Embodiments relate to a semi-finished honeycomb-core product and a sandwich component having fewer or no core impressions on a surface, and also the use thereof as a component of a motor vehicle.
  • a method for producing a semi-finished honeycomb-core product for producing a sandwich component comprises: providing a honeycomb core; moistening the honeycomb core at least in a deformation portion or region of the webs of the honeycomb core; and crumpling the honeycomb core at least in the deformation portion or region.
  • a method for producing a semi-finished honeycomb-core product for a motor vehicle comprising: providing a honeycomb core having a plurality of webs; moistening the honeycomb core at least in a deformation region of the webs; and crumpling the honeycomb core at least in the deformation region.
  • a method for producing a sandwich component for a motor vehicle comprising: providing a honeycomb core having a plurality of webs; moistening the honeycomb core at least in a deformation region of the webs; crumpling the honeycomb core at least in the deformation region; applying outer layers to the ends of the honeycomb core, wherein the outer layers are composed of fibre composite material, or semi-finished fibre material.
  • a sandwich component for a motor vehicle comprising: a honeycomb core having a plurality of webs, wherein the honeycomb core is moistened at least in a deformation region of the webs, and the deformation region is crumpled; and outer layers arranged at each end region of the honeycomb core
  • a honeycomb core such as, for example, a paper honeycomb core
  • pre-treated such that, during subsequent use as the core of a sandwich component and compression of the sandwich component, fewer or no core impressions at all arise on a visible surface of the component. This is achieved in that at least one portion or region of the webs, i.e., a layer or plane of the honeycomb core, is first of all moistened and crumpled in the moistened state and thus weakened (“pre-crushing”).
  • the webs are then collapsed at least in portions or regions so that they preferably form a bellows-like structure in portions or regions. Preferably only said portion or region of the webs gets crumbled and the remaining portions or regions of the webs do not get crumbled.
  • this preforming, and thus, weakening of the webs, during subsequent compression in a sandwich component the webs yield more easily to the pressure, and thus, web impressions on the outer layer are reduced.
  • a matrix for example an adhesive, or initially dry fibre material is preferably subsequently applied to the crumpled honeycomb core, or already pre-impregnated semi-finished fibre products (prepregs) are laid on the core or the latter is encapsulated therewith.
  • the deformation portion or region is preferably located in an end region of the webs of the honeycomb core, i.e., in a peripheral zone of the honeycomb core. This peripheral zone may be used subsequently in a manner bearing against an outer surface of a sandwich component having this honeycomb core.
  • the moistening is carried out by the honeycomb core being dipped into a liquid-filled container.
  • the container can have, for example, a liquid level of about 0.5-5 mm, depending on the respective core thickness and the desired extent of preforming.
  • other types of moistening for example by spraying with a liquid, would be possible.
  • the crumpling is carried out by the honeycomb core being pushed against a planar surface.
  • the honeycomb core does not get deformed, apart from the crumbling itself, and thus, gets its desired form only afterwards, after the attachment of outer layers.
  • the planar surface may be the bottom of the container.
  • the pushing of the honeycomb core, in particular, against the bottom of a container may be carried out via a planar component, in which the planar component is to bear against one end of the honeycomb core.
  • the planar component may be, for example, a cover. In this way, it is possible to exert a desired pressure evenly on the honeycomb core.
  • the honeycomb core is dried following the crumpling, in particular, before being processed further, for example, to form a sandwich component.
  • the honeycomb core is dried before the attachment of outer layers.
  • the liquid for moistening the honeycomb core may be water-based, or acid-based, or base-based, or alcohol-based. It is favourable for the liquid used to have low surface tension and to evaporate quickly.
  • a method for producing a sandwich component comprises: producing a semi-finished honeycomb-core product as described herein; applying outer layers to the ends of the honeycomb core, i.e., to the top and bottom of the honeycomb core, wherein the outer layers are composed of fibre composite material or semi-finished fibre material.
  • the core may be coated or encapsulated with fibre material, i.e., fibre composite material, or semi-finished fibre material, on the top and the bottom with said fibre material protruding.
  • fibre material i.e., fibre composite material, or semi-finished fibre material
  • the fibre material may already contain or not yet contain a matrix
  • the matrix may also be a material that is composed of two or more components, such as resin with curing agent.
  • plastics material or synthetic resin it is also possible to use plastics material or synthetic resin, to which small fibre tufts have already been admixed, and this is thus applied to the paper cores as an outer layer.
  • the outer layers can each are composed of one or more fibre material/semi-finished fibre material layers or plies.
  • the fibre plies or the fibre material may be composed of woven fabrics, laid fabrics, knits, grids, mats and/or nonwovens.
  • the fibres used are natural fibres (for example flax fibres, hemp, bamboo, etc.), glass fibres or carbon fibres, ceramic fibres, textile fibres, synthetic fibres etc.
  • the outer layers are impregnated, sprayed and/or wetted with a PUR matrix.
  • thermoplastic or thermosetting plastics materials are used as the matrix material.
  • the honeycomb core can also already be coated or encapsulated on the top side and underside with a semi-finished fibre material pre-impregnated with a matrix (prepreg), for example a thermoplastic or thermosetting plastics material.
  • preg a matrix
  • thermoplastic or thermosetting plastics material for example a thermoplastic or thermosetting plastics material
  • the liquid for moistening the honeycomb core prior to crumpling can also be similar or identical to the matrix material subsequently used in the production of the sandwich component, for example, isocyanate, or an ester of isocyanic acid when a PUR matrix material is used. In this case, it is advantageous not to allow the honeycomb core to dry before a further application of the matrix material.
  • the sandwich component is compressed in a moulding tool in order to obtain a desired shape.
  • the compression may be carried out such that deformation of the sandwich component occurs primarily in the deformation portion or region of the honeycomb core.
  • honeycomb cores may have honeycomb-shaped or wave-shaped arrangements, or have any other conceivable honeycomb shape, for example round, rectangular, square, trapezoidal and polygonal, these (within a honeycomb core) not having to be regularly repeating shapes.
  • suitable materials for the honeycomb core are paper, or board, or other cellulose-based materials.
  • a semi-finished honeycomb-core product comprises a honeycomb core crumpled and weakened in a deformation portion or region, at one end of webs of the honeycomb core, wherein the webs are deformed in a bellows-like manner in a layer of the honeycomb core that forms a peripheral zone.
  • a sandwich component is produced as described herein, and thus, has a honeycomb core which is crumpled in a deformation portion or region, wherein the deformation portion or region is an end region of webs of the honeycomb core.
  • such a sandwich component may be used as a planar component of a motor vehicle, in particular as a bonnet, door, roof, tailgate, loading floor, covering, vehicle floor, or torsion box.
  • the deformation portion or region is to bear against that outer layer of the sandwich component that forms the visible outer side of the sandwich component.
  • FIGS. 1-4 schematically illustrate a method for producing a semi-finished honeycomb-core product, in accordance with embodiments.
  • FIG. 5 schematically illustrates a sandwich component having a honeycomb core, in accordance with embodiments.
  • FIGS. 1-4 illustrate the steps in a method for producing a semi-finished honeycomb-core product.
  • a side of a honeycomb core 1 composed of a plurality of webs 3 , that faces a subsequent outer side is inserted, at a deformation portion or region 2 , into a liquid bath in a container 4 container liquid 7 .
  • the container 4 may be, a trough or a basin.
  • the deformation portion or region 2 of the honeycomb core 1 is dipped such that the webs 3 at the deformation portion or region 2 are moistened.
  • the webs 3 soften at the deformation portion or region 2 .
  • the liquid 7 has low surface tension and evaporates quickly, and is similar or identical to one of the subsequent matrix components, for example isocyanate in PUR matrix systems.
  • the liquid level is between 0.5 and 5 mm.
  • the dwell time in the liquid 7 may be selected, for example, in a manner dependent on the web thickness.
  • the honeycomb core 1 is then pushed or otherwise manipulated from above against the bottom 5 of the container 4 , via a cover 6 .
  • a force in the direction of the indicated arrow is exerted, said force crumpling the honeycomb core 1 in the moistened deformation portion or region 2 .
  • the honeycomb core 1 collapses in this peripheral zone by local softening and in dependence on the stroke path of the cover 6 .
  • the honeycomb core 1 may remain in this state for a predetermined period of time.
  • the cover 6 is removed and the honeycomb core 1 is removed from the container 4 .
  • the honeycomb core 1 is dried when use is made of a liquid 7 that does not correspond to the matrix used.
  • the honeycomb core 1 may, initially, turn drip off for a particular dwell time ( FIG. 3 ) and then fully dry, introduced into a drying device which specifies a particular crumpling height ( FIG. 4 ).
  • the arrows illustrated in FIG. 3 and FIG. 4 in each case represent an air flow 9 .
  • a shorter drying time or no drying time at all is necessary. Any drying time that is required may in this case be adapted to a subsequent processing process, for example reduced, and may thus be variable.
  • FIG. 5 illustrates such a sandwich component, having a honeycomb core 1 between two outer layers 8 .
  • the deformation portion or region or region 2 of the honeycomb core 1 bears against that outer layer 8 that is subsequently used as the visible outer side.
  • the illustrated sandwich component has already been brought into a predetermined form by pressing.
  • the sandwich component has only minor or no core impressions at all, particularly at the outer layer 8 which is adjacent to the deformation portion or region or region 2 .
  • Coupled or “connected” may be used herein to refer to any type of relationship, direct or indirect, between the components in question, and may apply to electrical, mechanical, fluid, optical, electromagnetic, electromechanical or other connections.
  • first,” “second, etc. are used herein only to facilitate discussion, and carry no particular temporal or chronological significance unless otherwise indicated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Quality & Reliability (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Superstructure Of Vehicle (AREA)
  • Body Structure For Vehicles (AREA)
US14/978,876 2014-12-22 2015-12-22 Semi-finished honeycomb part and sandwich part Active 2036-03-18 US9956735B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14199857.5 2014-12-22
EP14199857.5A EP3037264B1 (de) 2014-12-22 2014-12-22 Wabenkern-Halbzeug und Sandwichbauteil
EP14199857 2014-12-22

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US20160176140A1 US20160176140A1 (en) 2016-06-23
US9956735B2 true US9956735B2 (en) 2018-05-01

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US (1) US9956735B2 (de)
EP (1) EP3037264B1 (de)
JP (1) JP6316267B2 (de)
KR (1) KR101821021B1 (de)
CN (1) CN105711154B (de)
BR (1) BR102015032024B8 (de)
CA (1) CA2915718C (de)
ES (1) ES2663785T3 (de)
MX (1) MX2015017848A (de)
PL (1) PL3037264T3 (de)
RU (1) RU2634775C2 (de)

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DE102012022713B3 (de) * 2012-11-21 2014-02-13 Diehl Aircabin Gmbh Paneel und Verfahren zur Herstellung eines Paneels
JP6975405B2 (ja) 2017-12-27 2021-12-01 スズキ株式会社 車両のリアフロア構造

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US3557277A (en) * 1966-08-10 1971-01-19 Bilger Friedrich Process for the shaping of fiber building board
JPS6049144A (ja) 1983-08-24 1985-03-18 Yokohama Rubber Co Ltd:The ハニカム構造の衝撃吸収体
JPS6271426U (de) 1985-10-24 1987-05-07
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